【摘要】 研究了加入机械搅拌和静态混合器后对多相气升式反应器流体力学性能的促进作用，重点考察固体颗粒的直径、固含率（固体质量分数，下同）对液体循环速度、气含率（气体体积分数，下同）等的影响。实验证明，对液体循环速度来说，在多相流中并非通气量、搅拌转速越大越好。对气含率而言，多相气升式反应器不但存在临界颗粒直径和临界固含率，还存在一个临界表观气速，在此气速以下，才能产生气含率随固含率增加而增加的现象。最后对气含率、固含率及能量耗散速率作了关联。更多还原

【Abstract】 Multi-phase airlift reactor has single structure, easy operation, and higher transfer characteristics. The functions of hydrodynamics in the reactor were intensified by adding mechanical agitation and static mixers. The effects of glass bead diameter and solid loading on the liquid circulating velocity as well as gas hold-up of the reactor were discussed. Suitable values of gas flow and agitation speed in multi-flow should be taken for determining liquid circulating velocity. In a multi-phase airlift reactor, to optimize the operation, critical value of solid particle diameter, solid loading and superficial gas velocity should be considered. Under the velocity, the gas hold-up will increase with an increase of solid loading. The correlation equations of ε g for two or three phase systems were proposed.更多还原